I agree that it is an excellent refutation. It would have been good to see someone in the Resistance write something like it, but no one has, that I know of.
It's like Mundabor understands +ABL, and is not embarrassed by his actions, as the SSPX now are. The wimpy SSPX are not really a player anymore in standing up for the Truths of the Catholic faith, like +ABL did. Others instead, like Mundabor, have taken up that task.